From f49652130dbe7d7f1cea770c501f32d3664a72c8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Daniel=20Ekl=C3=B6f?= <daniel@ekloef.se>
Date: Thu, 5 Nov 2020 21:14:42 +0100
Subject: [PATCH] =?UTF-8?q?config:=20don=E2=80=99t=20crash=20(div-by-zero)?=
 =?UTF-8?q?=20if=20the=20alpha=20component=20is=200?=
MIME-Version: 1.0
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---
 CHANGELOG.md | 1 +
 config.c     | 3 +++
 2 files changed, 4 insertions(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 95c1007..115c7a9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -27,6 +27,7 @@
   (https://codeberg.org/dnkl/yambar/issues/12).
 * mpd: fix compilation with clang
   (https://codeberg.org/dnkl/yambar/issues/16).
+* Crash when the alpha component in a color value was 0.
 
 
 ### Security
diff --git a/config.c b/config.c
index 556891c..743a1a3 100644
--- a/config.c
+++ b/config.c
@@ -53,6 +53,9 @@ conf_to_color(const struct yml_node *node)
     uint16_t blue = hex_byte(&hex[4]);
     uint16_t alpha = hex_byte(&hex[6]);
 
+    if (alpha == 0)
+        return (pixman_color_t){0, 0, 0, 0};
+
     alpha |= alpha << 8;
     int alpha_div = 0xffff / alpha;